Folding step



FIG. 1 is a top front and side perspective view of the folding step;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a right side elevation thereof. 

I claim, the ornamental design for a folding step, as shown as described. 